Two big 'mama' movies released at the same time but 'Baby...' couldn't be any more different to '...Mia!'.

'Baby Mama' is an underdeveloped romantic comedy saved by the strength of its two leading performers.

'Mean Girls' writer Fey stars as Kate, a career-minded, 37-year-old health food professional who, after numerous dating disasters and being told she's infertile, opts to go the surrogate mother route. 'Blades of Glory' and 'Arrested Development's Poehler plays Angie, the mouthy, white trash baby lady in question. When the two end up living together the road to motherhood runs anything but smoothly.

Fey is the straight-laced cynic - desperately trying to be optimistic towards Poehler's unPC, in-your-face-but-good-hearted Angie. Her reaction to Kate's healthy organic eating plan is: "That crap is for rich people who hate themselves... I'm not trying to be dramatic but I'd rather be shot in the face then eat that food."

After years of boys-club top notch comedy, courtesy of the Frat Pack's core members Will Ferrell, Steve Carell and Adam McKay, the girls don the gloves and step into the ring. The hit TV show 'Saturday Night Live', responsible for nurturing many of America's comedic talent, including those mentioned above, also launched Fey and Poehler. The two work seamlessly together, the best scenes involve them bouncing off each other, reacting to the surreal situation they find themselves in.

Thanks to '30 Rock', which she writes as well as stars in, Fey is the hottest thing in comedy - a female Judd Apatow, if you will. The biggest flaw with this film is that it's not penned by her. Instead it's written by Michael McCullers, who wrote the last two 'Austin Powers' movies. While it's probably the best work he's written, it has Powers humour splashed all over it - poking juvenile fun with the odd cheap gag. The pre-natal teacher has an over-emphasised lisp, for example. Slapstick? Yes. But '30 Rock' funny? No.

There was a good opportunity to inject some suspenseful drama for Kinnear's character in a courtroom scene but it just falls flat. Martin plays a superficial earth lover who hides his hardcore business greed under a hippy façade - a caricature with potential that doesn't deliver. The ending is rushed and predictable too, as if McCullers ran out of time, panicked and threw it together.

Fey and Poehler provide plenty of comedy moments, making the film worth seeing. Looking forward to seeing what their perfect pairing delivers next.

Taragh Loughrey-Grant